York BNG advice
Biodiversity Net Gain in York
Plan your York development around local habitats, planning requirements and practical biodiversity gains.
ACP Consultants can help with habitat surveys, biodiversity metric calculations and a practical BNG delivery plan for your York site.
Adopted planning policy
Use the adopted Local Plan and its corrected policy references
The City of York Local Plan was adopted on 27 February 2025. The council published factual corrections following decisions in April and June 2026. Use the current plan document and errata alongside the policies map.
| Policy | Focus | Applicant response |
|---|---|---|
| GI1 | Green infrastructure | Explain the green and blue infrastructure within and around the site. |
| GI2 | Biodiversity and access to nature | Provide ecological evidence and explain the proposed biodiversity outcome. |
| GI2a | Strensall Common SAC | Check the mapped distance zones and the applicable assessment or mitigation route. |
| GI3 | Green infrastructure network | Identify habitat connections and opportunities to strengthen them. |
| GI4 | Trees and hedgerows | Coordinate retention, protection and new planting with the development layout. |
| GI5 and GI6 | Existing and new open space | Distinguish habitat delivery from the separate provision and protection of usable open space. |
The council’s green infrastructure guidance explains GI2’s link to BNG under the Environment Act. State clearly how the proposal addresses the relevant policies as well as the statutory metric.
A distinctive York planning constraint
Check Strensall Common early in the site appraisal
The GI2a distance zones matter
GI2a establishes a 400-metre exclusion zone for a net increase in residential units around the SAC. Non-residential proposals in that zone require Habitats Regulations assessment under the policy.
Between 400 metres and 5.5 kilometres, the policy sets out further requirements for housing and mitigation. The detailed route differs between named allocations and other housing proposals. Read the full wording for the actual site.
Use the corrected map and allocation references
The 2026 errata correct housing-allocation markers relating to the 5.5-kilometre buffer. Check the corrected plan rather than relying on an older downloaded allocation table.
Programme any necessary mitigation and assessment early. The BNG calculation and protected-site assessment answer different questions; show how both fit the design, delivery timetable and planning submission.
Recent policy changes
York Local Plan 2045 is an emerging replacement
The first consultation has closed
The council announced York Local Plan 2045 on 28 September 2026. Its initial scoping consultation ran until 8 November 2026. The adopted 2025 plan remains the starting point while replacement preparation continues.
Record the plan stage and the date checked in a planning statement. Follow subsequent consultation and examination documents where they affect the proposal, without treating early suggestions as adopted requirements.
Resolve site design with the evidence available now
For strategic allocations or phased development, coordinate ecology, access, drainage and open-space planning from the outset. Keep retained habitats protected through temporary works as well as the completed scheme.
Identify which habitat commitments belong to each permission or phase. This makes it easier to reconcile the metric, landscape specification and management responsibilities when the design changes.
Local Nature Recovery Strategy
A shared nature recovery strategy, with site-specific measures
North Yorkshire and York LNRS
North Yorkshire Council leads the published North Yorkshire and York Local Nature Recovery Strategy. Its official documents and map guidance cover both council areas.
Find the proposed habitat parcel and the relevant mapped measure. Save a clear map reference and explain why the proposed intervention suits the local soils, water conditions and existing habitat network.
Explain strategic significance rather than assuming it
York’s BNG guidance identifies two considerations: the parcel’s location within the strategic network and whether the proposed habitat action matches a mapped measure. Use the current metric guidance when recording the result.
The recovery strategy can help target habitat investment. Planning authority boundaries, protected-site duties and legal delivery arrangements still need to be established for the particular development and habitat land.
Local ecology
York’s rivers, meadows and urban habitats need different approaches
The council’s Biodiversity Duty report highlights the Ouse and Foss corridors, flood meadows, Strensall’s lowland heath and Lower Derwent Valley wetlands. These give useful context for survey scoping.
| Setting | What to investigate |
|---|---|
| Ouse and Foss corridors | Bank vegetation, watercourse condition, lighting, drainage and wildlife movement. |
| Clifton Ings, Rawcliffe Meadows and other floodplain grasslands | Existing grassland quality, flood patterns and workable cutting or grazing regimes. |
| Strensall Common and surrounding land | Heathland interests, designated-site impact pathways and relevant GI2a controls. |
| Lower Derwent Valley and connected land | Wetland bird interests, hydrological connections and effects beyond the red line. |
| Urban parks, gardens and former industrial land | Actual habitat classification, mature trees, nesting or roosting opportunities and links between green spaces. |
| Rural villages and farmland within the city boundary | Hedgerows, ponds, ditches and habitat continuity alongside access and agricultural use. |
The Local Biodiversity Action Plan provides further local evidence. Confirm current records and survey findings for the land concerned; landscape context alone cannot establish its habitat type or condition.
Planning evidence
Prepare the application evidence and delivery explanation together
The council’s validation requirements distinguish the minimum BNG information from additional evidence that helps demonstrate a deliverable scheme. Use current national rules when assessing exemptions or transition arrangements.
| Evidence | Purpose |
|---|---|
| Applicability and baseline date | Explain whether the gain condition applies and justify any earlier baseline date. |
| Metric, habitat plan and relevant degradation evidence | Make the baseline traceable to the site, survey and mapped parcels. |
| Irreplaceable-habitat information | Identify the relevant habitat and the specific approach required. |
| Delivery statement and draft gain plan | Show the gain hierarchy and the proposed onsite or offsite route. |
| Draft habitat management and monitoring plan | Explain how the habitat targets can be delivered and maintained. |
| Pre- and post-development plans | Keep metric areas and drawings aligned. The council prefers GIS alongside PDF versions. |
The checklist also describes ecological appraisal and further species-survey triggers. Schedule necessary seasonal work early. The draft delivery evidence supports determination; approval of the final Biodiversity Gain Plan follows the statutory route before commencement.
National requirements
Does statutory BNG apply to your development?
Qualifying planning permissions in England normally require at least 10% biodiversity gain. Start with the development type, application date, whole red-line area and habitats affected. Record the reasons and evidence if claiming an exemption.
Rules from 6 August 2026
New applications on sites of 0.2 hectares or less may be exempt, provided onsite priority habitat is not adversely affected. Wholly temporary development permitted for five years or less can also qualify, subject to the habitat condition. The dedicated self-build and custom-build exemption no longer applies to new applications from that date.
Earlier applications and other exemptions
Householder development has a separate exemption. The de minimis route has specific habitat-impact thresholds. Earlier permissions and section 73 variations need their own transitional assessment. Avoid assuming that “one house” or “small site” settles the question.
Use the BNG exemption guide with the current government exemptions.
Survey and design
Choose the metric and test the layout early
Use a statutory tool and record its version
Defra’s statutory biodiversity metric workbook was updated to version 1.1.1 on 10 November 2026. Record the version used and follow the accompanying rules. Published statutory versions can remain acceptable; non-statutory Metric 4.0 is a different tool.
The Small Sites Metric has separate eligibility restrictions. Confirm suitability before selecting it. See the statutory metric guide and current government tools.
Make the figures deliverable
Classify and assess existing habitats before clearance. Calculate area, hedgerow and watercourse units separately, then apply the relevant trading rules. State the evidence for condition and strategic significance instead of assuming the most favourable scores.
Test changes to access, drainage and landscaping with the ecologist. Habitat area, target condition, establishment time and maintenance access must remain credible after engineering changes. Update the plans and metric together.
Design coordination
Fit biodiversity targets around flood risk, heritage and practical use
River and floodplain proposals
Design habitat creation around realistic water levels, soils and maintenance access. Check that flood storage, drainage infrastructure and riverbank works are compatible with the proposed habitat condition.
Use appropriate watercourse assessment where required. Keep habitat areas, drainage drawings and maintenance operations consistent, including access needed after flooding or during establishment.
Urban regeneration and constrained plots
On city-centre and redevelopment sites, coordinate tree rooting space, underground services, public routes and ecological connections. Consider the historic setting when choosing planting and landscape treatments.
A green roof, planted courtyard or new tree needs a specification and management route that match its metric treatment. Avoid promising areas or condition targets that later servicing or safety requirements will remove.
Off-site biodiversity units
Harrogate Habitat Bank is a published nearby delivery example
Location, habitats and registration reference
Environment Bank lists Harrogate Habitat Bank between Harrogate and Otley, with reference BGS-140225001. It identifies North Yorkshire Council as the host planning authority and Pennine Dales Fringe as the National Character Area.
Listed habitats include lowland meadow, broadleaved woodland, ponds, scrub and hedgerows. Treat the published scheme as a starting point for enquiry; obtain a dated quotation and current evidence of compatible units.
Check suitability for the actual York shortfall
Confirm habitat type, quantity, trading requirements and spatial treatment using the current statutory metric. The development’s location and the habitat bank’s host authority are separate inputs.
Inspect the official gain-site register and the proposed allocation. Keep legal security, reservation terms, delivery dates and management responsibilities visible in the transaction.
Published delivery example
A York battery-storage project illustrates voluntary offsite delivery
What the supplier’s case study says
Environment Bank describes biodiversity units for a York battery-storage project involving UK Battery Storage and National Grid. Its account identifies a voluntary purchase of woodland and grassland units from Harrogate Habitat Bank.
The stated purpose was to address habitat impacts while the storage compound operated. The account provides a useful example of cross-authority habitat delivery and a corporate environmental commitment.
The practical lesson for a planning applicant
Establish whether a proposed purchase meets a statutory planning obligation, a local policy commitment or a voluntary objective. Keep that purpose clear in the agreement and project records.
For mandatory BNG, verify the registration, allocation and gain-plan evidence required for the particular permission. This supplier example does not establish a planning decision or current unit availability for another site.
Costs and responsibilities
Budget for surveys, legal security and long-term management separately
No current City of York BNG monitoring tariff was verified in the reviewed public sources. Obtain a written council quotation for the proposed legal and monitoring arrangements. The neighbouring North Yorkshire Council tariff should not be used as York’s price.
| Category | What to establish |
|---|---|
| Ecological assessment | Survey scope, seasonal visits, condition assessment, metric preparation and design revisions. |
| Planning and legal administration | Applicable application or gain-plan fees and agreement drafting or review. |
| Council monitoring | The project-specific contribution, reporting expectations and payment trigger. |
| Habitat works and management | Establishment, maintenance, inspections, reporting and remedial funding. |
| Offsite units or statutory credits | The quantity and habitat category required, allocation terms and the applicable delivery route. |
Allow for the effect of flood exposure, access constraints and public use on management costs. A unit purchase price is distinct from the cost of surveys and council administration.
Local restoration evidence
Catchment restoration offers a useful management lesson
Nature-based work across the wider catchment
York’s Biodiversity Duty report describes Ousewem, a partnership working with farmers and landowners across the Swale, Ure, Nidd and Ouse catchments. City of York Council leads the project with North Yorkshire Council and other partners.
The programme links nature-based solutions with flood-risk management. It shows why habitat design around York should consider upstream processes as well as the development boundary.
Translate the principle into a deliverable site plan
Consider whether drainage, soil management or connected planting can support the proposed habitat without introducing new conflicts. Confirm the necessary permissions and arrangements with the relevant landowners.
Then set out establishment tasks, monitoring and responses to failure in the habitat management and monitoring plan. Assign the work and funding before the construction programme fixes the layout.
Your next steps
A practical York planning evidence checklist
- Confirm the City of York boundary
Identify the planning authority for the development and any separate habitat-delivery land.
- Use the corrected adopted policies
Check the current Local Plan and GI2a mapping, including the 2026 allocation corrections.
- Survey and map the baseline
Coordinate habitat, species, river, tree and protected-site evidence before clearance and layout decisions.
- Explain the recovery measure and delivery route
Connect the proposed habitat to the relevant LNRS measure and record metric assumptions.
- Reconcile the application package
Align the calculation, habitat maps, delivery statement, draft gain plan and management commitments.
- Secure approval and management
Confirm any offsite allocation, applicable charges and legal arrangements, with gain-plan approval before commencement where required.
Project support
BNG assessment and planning support for York
From survey to a workable delivery plan
ACP can help with habitat surveys, condition assessments, statutory metric calculations and BNG reporting. We also support gain plans and habitat management documentation. The scope should reflect the actual land, planning stage and available evidence.
Our BNG guidance hub explains the overall process. The England guide provides national context. Use this local guide to identify the council policies and ecological connections that need a site-specific response.
Send the information you already have
Share the red-line plan, site address or grid reference, proposed works and application stage. Include ecology reports, landscape drawings and council correspondence. These help avoid duplicated work and identify the remaining surveys and delivery decisions.
Common local questions
York Biodiversity Net Gain FAQs
Is York covered by North Yorkshire Council for planning?
No. City of York Council has its own planning area and Local Plan. The shared North Yorkshire and York LNRS does not merge the authorities or their planning charges.
Which Local Plan applies in York?
The plan adopted on 27 February 2025 remains the adopted starting point. Use its current corrected publication and policies map. York Local Plan 2045 is a replacement in preparation.
Why do the 2026 Local Plan corrections matter?
The errata include corrections to housing-allocation markers associated with the Strensall Common 5.5-kilometre buffer. Use the corrected references when checking GI2a.
What should I check near Strensall Common?
Measure the site against the SAC boundary and consult GI2a. It distinguishes the 400-metre exclusion zone and the wider zone to 5.5 kilometres, with requirements varying by development and allocation.
Does York have its own nature recovery strategy?
York shares the North Yorkshire and York LNRS, led by North Yorkshire Council. Use the official mapped measure and actual site conditions to explain the proposed habitat action.
Should I submit a draft management plan with the application?
The council’s validation list identifies a draft or interim HMMP among the additional evidence that helps demonstrate a deliverable BNG approach. Confirm the appropriate package for the proposal and its planning stage.
Can a York scheme buy units from outside the city?
Potentially. Check the actual habitat category, spatial and trading rules, legal security, registration and allocation. A nearby provider’s marketing description is only the starting point.
Does the battery-storage example demonstrate mandatory BNG approval?
The supplier describes a voluntary purchase linked to a corporate environmental commitment. It should be read in that context, rather than as evidence of another project’s statutory gain-plan approval.
Can I use North Yorkshire’s monitoring fee schedule for York?
Obtain City of York Council’s own confirmation. Monitoring, legal administration, professional fees and habitat-unit prices are separate cost categories.
What should I send ACP for a York BNG quotation?
Send the red-line plan, location, proposed works and planning stage, together with ecology reports and landscape or drainage drawings. Include council correspondence and any known Strensall Common policy issue.
Talk to ACP / Site enquiries
What does your site need next?
Tell us where the site is, what you plan to build and how far the application has progressed. We’ll use that context to discuss the surveys, calculations or plans your project needs.
What to have to handA red-line plan, an existing ecology report or a request from the council can help us scope the work. Start with whatever you already have.
Request a site-specific quotation
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York BNG
Sources and references
Reviewed 11 November 2026.
Planning, nature recovery and delivery sources
- York adopted Local Plan and 2026 corrections
- Current Local Plan: GI1–GI6 and Strensall Common GI2a
- City of York green infrastructure guidance
- York Local Plan 2045: initial consultation closed 8 November 2026
- City of York planning validation requirements
- City of York BNG and LNRS interpretation guidance
- North Yorkshire and York LNRS documents
- York Biodiversity Duty report 2024–2026
- York Local Biodiversity Action Plan 2017
- Environment Bank: Harrogate Habitat Bank
- Environment Bank: York battery-storage unit purchase
- National BNG planning guidance
- Current exemptions and transition provisions
- Current statutory biodiversity metric tools